/Engine/Plugins/Runtime/OpenXR/Source/OpenXRHMD/Public/OpenXRBlueprintFunctionLibrary.h
Allows to change the environment blend mode at runtime.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="OpenXR|Experimental") static void SetEnvironmentBlendMode ( int32 NewBlendMode )